IFM Electronic KQ5 Series Manual de usuario

Operating instructions

Capacitive sensors

KQ5 UK

80222074 / 00 07 / 2019

Contents

1 Preliminary note��3

1�1 Symbols used ��3

2 Safety instructions ��3

3 Functions and features ��3

3�1 Applications ��4

4 Installation��4

4�1 Use as a level sensor ��4

4�1�1 Installation on tanks with a mounting adapter ��4

4�1�2 Installation on bybass pipes with a mounting adapter ��5

4�2 Use as proximity sensor ��6

4�2�1 Installation and installation remarks ��6

4�2�2 Mounting adapter bore hole dimensions ��7

4�2�3 Installation without a mounting adapter ��7

4�2�4 Sensor bore hole dimensions ��8

5 Electrical connection��8

5�1 Wiring��8

6 Operating and display elements ��8

7 Settings��9

7�1 IO-Link ��9

8 Operation��9

9 Maintenance, repair, disposal��9

10 Terms ��10

1 Preliminary note

1.1 Symbols used

• An instruction is indicated by "►":

Example: ► Mount the unit as shown.

• A reaction to the action is indicated by ">":

Example: > yellow LED lights.

Important note

Non-compliance can result in malfunctions or interference�

Information

Supplementary note�

2 Safety instructions

• Please read the product description prior to set-up of the unit� Ensure that the

product is suitable for your application without any restrictions�

• The unit conforms to the relevant regulations and EC directives�

• Improper or non-intended use may lead to malfunctions of the unit or to

unwanted effects in your application�

• That is why installation, electrical connection, set-up, operation and

maintenance of the unit must only be carried out by qualified personnel

authorised by the machine operator�

3 Functions and features

• capacitive sensor used as level or proximity sensor

• detects without contact metals, almost all plastics, glass, ceramics, wood,

paper, oils, greases, water and all hydrous materials and indicates their

presence by providing a switched signal

• in level applications the sensor detects the medium through the tank wall (only

suitable for non-metallic tanks)

3.1 Applications

4 Installation

4.1 Use as a level sensor

4.1.1 Installation on tanks with a mounting adapter

The mounting adapter is to be ordered separately (order no� E12153)�

Figure A

►Place the sensor with the lower part (1) into the mouting adapter� The sleeves

of the mounting adapter must engage with the lower cutouts of the sensor�

►First slightly press the lower part of the sensor�

►The sensor must be fully inserted into the mounting adapter (2)�

> You can hear the sensor snap in�

Figure B

►Fix the sensor with the enclosed screws (3) to the adapter�

Figure C

►Fix the mounting adapter including the inserted sensor to the tank at the

requested height using suitable screws (7)�

The sensor can be inserted in the mounting adapter E12153 in both

directions�

Do not place the mounting adapter including inserted sensor in the

immediate vicinity of metallic objects�

4.1.2 Installation on bybass pipes with a mounting adapter

The mounting adapter is to be ordered separately (order no� E12153)�

3x Sn

►Fix the sensor to the bypass at the requested height with common cable ties�

Insert the cable ties through the existing openings of the mounting adapter and

tighten them firmly�

4.2 Use as proximity sensor

4.2.1 Installation and installation remarks

without mounting adapter with mounting adapter

1: sensing face

2: plastic plate

Sn: nominal sensing range (see data sheet)

A: distance = Sn

B: width of the mounting adapter = 36

►Align the sensing face (1) to the object�

►Adhere to the indicated minimum distances to metallic objects opposite and

beside the sensor (free space)�

►Non-metallic objects (e�g� plastic fixtures) are allowed within the lateral free

space�

►Fix the sensor with appropriate fixing screws to the designated location�

►If the sensor is installed behind a plastic plate (2), the object will be detected

through the wall. Depending on the material used and the wall thickness the

sensor characteristics might change slightly. Do not use conductive plastics! If

possible, use thin walls�

4.2.2 Mounting adapter bore hole dimensions

15 3,2

2,9

4,2

3,2

Do not place the mounting adapter including inserted sensor in the

immediate vicinity of metallic objects�

4.2.3 Installation without a mounting adapter

►Fix the sensor at the intended location using suitable screws or a suitable glue�

►Align the cutouts as shown�

4.2.4 Sensor bore hole dimensions

5 Electrical connection

The unit must be connected by a qualified electrician�

The national and international regulations for the installation of electrical

equipment must be adhered to�

► Disconnect the installation from power and connect the unit.

5.1 Wiring

p-switching (types FPKG�� or ��FPOG��)















 











n-switching (types ��FNKG�� or ��FNOG��)























 

BN = brown, BK = black, BU = blue

6 Operating and display elements

1: sensing face

2: LED

7 Settings

The following chapter applies only to units with the article number KQ51xx�

7.1 IO-Link

This unit has an IO-Link communication interface which enables direct access to

process and diagnostic data� In addition it is possible to set the parameters of the

unit while it is in operation� Operation of the unit via the IO-Link interface requires

an IO-Link master�

With a PC, suitable IO-Link software and an IO-Link adapter cable communication

is possible while the system is not in operation�

The IODDs necessary for the configuration of the unit, detailed information about

process data structure, diagnostic information, parameter addresses and the

necessary information about the required IO-Link hardware and software can be

found at www�ifm�com�

8 Operation

Check whether the unit operates correctly� Bring about a sensor response by

taking suitable measures�

Display by LEDs:

LED yellow OFF: switching output disabled

LED yellow ON: switching output enabled

9 Maintenance, repair, disposal

The operation of the unit is maintenance-free. To ensure a correct function:

• Keep the sensing face and a clear space, if any, free from deposits and foreign

bodies�

When replacing the sensor ensure that installation is done in the same way and

that the same type of unit is used�

It is not possible to repair the unit�

After use dispose of the unit in an environmentally friendly way in accordance with

the applicable national regulations�

10 Terms

Active zone

Area above the sensing face in which the sensor reacts to the approach of the

target�

Output function

Normally open: object within the active zone - output switched.

Normally closed: object within the active zone - output blocked.

Programmable: Choice between normally closed or normally open.

Positive switching: positive output signal (to L-).

Negative switching: negative output signal (to L+).

Power-on delay time

The time the sensor needs to be ready for operation after application of the

operating voltage (in the millisecond range)�

Hysteresis

Difference between the switch-on and the switch-off point.

Leakage current

Current for the internal supply of 2-wire units, also flows through the load when

the output is blocked�

Current consumption

Current for the internal supply of 3-wire DC units.

Switch point drift

Shifting of the switch point owing to changes of the operating conditions (e�g�

temperature, pressure, air humidity)�

Short-circuit protection

ifm sensors which are protected against excessive current by means of a pulsed

short-circuit protection� The inrush current of incandescent lamps, electronic

relays and low resistance loads may cause this protection to cut in and turn the

sensor off!

Operating voltage

The voltage range in which the sensor functions safely� A stabilised and

smoothed direct voltage should be used! Take into account residual ripple!

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